diff mbox

[v2] NFC: nfcwilink: move the dereference below the NULL test

Message ID CAPgLHd_SyyDQBeFGRDfXJFn58sH8FWfHWKRqrBGOyoVbFf3u7Q@mail.gmail.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Wei Yongjun Sept. 8, 2012, 1:53 a.m. UTC 
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

The dereference should be moved below the NULL test.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
 drivers/nfc/nfcwilink.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)



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Comments

Samuel Ortiz Sept. 19, 2012, 12:25 a.m. UTC | #1 
Hi Wei,

On Sat, Sep 08, 2012 at 09:53:22AM +0800, Wei Yongjun wrote:
> From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
> 
> The dereference should be moved below the NULL test.
> 
> spatch with a semantic match is used to found this.
> (http://coccinelle.lip6.fr/)
> 
> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
> ---
>  drivers/nfc/nfcwilink.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
Patch applied, thanks.

Cheers,
Samuel.
diff mbox

Patch

diff --git a/drivers/nfc/nfcwilink.c b/drivers/nfc/nfcwilink.c
index e7fd493..1a47190 100644
--- a/drivers/nfc/nfcwilink.c
+++ b/drivers/nfc/nfcwilink.c
@@ -352,8 +352,6 @@  static long nfcwilink_receive(void *priv_data, struct sk_buff *skb)
 	struct nfcwilink *drv = priv_data;
 	int rc;
 
-	nfc_dev_dbg(&drv->pdev->dev, "receive entry, len %d", skb->len);
-
 	if (!skb)
 		return -EFAULT;
 
@@ -362,6 +360,8 @@  static long nfcwilink_receive(void *priv_data, struct sk_buff *skb)
 		return -EFAULT;
 	}
 
+	nfc_dev_dbg(&drv->pdev->dev, "receive entry, len %d", skb->len);
+
 	/* strip the ST header
 	(apart for the chnl byte, which is not received in the hdr) */
 	skb_pull(skb, (NFCWILINK_HDR_LEN-1));